Frigatebirds spend months continuously airborne at sea 军舰鸟可以在海上持续待几个月

231. It's Ascension Island
     阿森松岛
232. eight hundred miles from any other land,
     距最近的其它陆地800英里
233. a welcome vital haven for long distance travelers.
     长途旅行者们生死攸关的避难所
234. Frigatebirds spend months continuously airborne at sea
     军舰鸟可以在海上持续待几个月
235. but at nesting time, they come to Ascension from all over the ocean.
     不过到了筑巢的时候 它就从海洋各处飞回到阿森松岛
236. The island's barren slopes of volcanic ash and lava
     一个充满了火山灰和火山岩的不毛之地
237. might seem to offer perfectly good sites for a nest
     却提供了一个筑巢的好地方

来自《行星地球 第一季 第十一集 Planet Earth S01E11 海洋深处》第 234 行